82 lines
1.4 KiB
Go
82 lines
1.4 KiB
Go
package command
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import (
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"fmt"
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"strings"
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"github.com/mitchellh/go-libucl"
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)
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// FlagVar is a flag.Value implementation for parsing user variables
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// from the command-line in the format of '-var key=value'.
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type FlagVar map[string]string
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func (v *FlagVar) String() string {
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return ""
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}
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func (v *FlagVar) Set(raw string) error {
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idx := strings.Index(raw, "=")
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if idx == -1 {
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return fmt.Errorf("No '=' value in arg: %s", raw)
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}
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if *v == nil {
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*v = make(map[string]string)
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}
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key, value := raw[0:idx], raw[idx+1:]
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(*v)[key] = value
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return nil
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}
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// FlagVarFile is a flag.Value implementation for parsing user variables
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// from the command line in the form of files. i.e. '-var-file=foo'
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type FlagVarFile map[string]string
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func (v *FlagVarFile) String() string {
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return ""
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}
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func (v *FlagVarFile) Set(raw string) error {
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vs, err := loadVarFile(raw)
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if err != nil {
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return err
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}
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if *v == nil {
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*v = make(map[string]string)
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}
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for key, value := range vs {
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(*v)[key] = value
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}
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return nil
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}
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const libuclParseFlags = libucl.ParserNoTime
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func loadVarFile(path string) (map[string]string, error) {
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var obj *libucl.Object
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parser := libucl.NewParser(libuclParseFlags)
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err := parser.AddFile(path)
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if err == nil {
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obj = parser.Object()
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defer obj.Close()
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}
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defer parser.Close()
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if err != nil {
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return nil, err
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}
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var result map[string]string
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if err := obj.Decode(&result); err != nil {
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return nil, err
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}
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return result, nil
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}
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